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Nannostomus beckfordi
Small tetra with characteristic thin pencil-like body. Beautiful gold and black longitudinal stripes running along the body, with mature males developing red coloration on the belly. Peaceful and popular for community tanks.
Beckford's pencilfish (Nannostomus beckfordi) is a slender characin widely distributed across the Amazon and Orinoco River basins and the Guiana region of South America. At 3–4 cm, its pencil-thin body is marked with a sharp gold-and-black longitudinal stripe and reddish fin highlights. Among the most readily available and beginner-friendly pencilfish species, it is also among the most distinctive: during the day it swims horizontally, but at night it adopts a characteristic head-down angled resting position — often alarming new keepers who interpret this as illness. Peaceful and compatible with most small fish and shrimp; however, it can be susceptible to fin nipping by more boisterous tankmates, so careful selection of companions is advisable. Diet consists of fine granular foods, frozen daphnia, and baby brine shrimp. Breeding by egg-scattering over fine plants is achievable in a well-established, stable setup.
Source: Wikipedia (CC BY-SA 4.0)
The Beckford's Pencilfish lives 3-5 years.
The Beckford's Pencilfish grows to 4-6cm.
The ideal temperature for the Beckford's Pencilfish is 23〜28℃.
Soft, slightly acidic water (pH 6.0–7.0) at 23–28°C is preferred, with blackwater setup enhancing coloration.
Origin
Amazon and Orinoco River basins, South America
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Nannostomus beckfordi Günther, 1872
Synonyms: Nannostomus anomalus Steindachner, 1876, Nannostomus aripiragensis Meinken, 1931, Nannostomus aripirangensis Meinken, 1931, Nannostomus beckfordi anomalus Steindachner, 1876, Nannostomus beckfordi aripirangensis Meinken, 1931, Nannostomus beckfordi beckfordi
Authority databases: FishBase · GBIF
Nomenclature follows global taxonomic authority databases.
Sources: FishBase / Seriously Fish / CITES Appendices (Checklist)
Regulations may change. Always verify the latest information with the relevant authorities.
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Lifespan
3-5 years
Size
4-6cm
Temperature
23〜28℃
Flakes, frozen foods
A temperature of 23-28°C suits it. A blackwater setup brings out the best coloration.
Slightly acidic to neutral (pH 6.0-7.5)
Peaceful and compatible with many small fish and shrimp. Avoid fin-nipping species, as it tends to be the one nipped.
Prefers fine granules, frozen daphnia, and brine shrimp. A hardy beginner species that takes food readily.
Breeds as an egg-scatterer among plants. A thicket of fine-leaved plants serves as the spawning site.
Sleeps on its side at night (not illness)
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Beckford's Pencilfish is 23〜28℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Beckford's Pencilfish is 3-5 years. With proper care and nutrition, they can live a long and healthy life.
Beckford's Pencilfish typically reaches 4-6cm as an adult. Size may vary depending on care conditions and individual genetics.
Beckford's Pencilfish feeds on: Flakes, frozen foods. Aim for a balanced diet with appropriate feeding frequency.
The price of Beckford's Pencilfish varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: June 24, 2026